Model: 18728A

Engine Poppet Valve Tappet

Special Features:

Face has 0.594 in.Dia flat surface

Properties:

Thread Direction
Right-hand
Casehardening Indicator
Not casehardened
Concentric Hole Depth
2.062 inches
Concentric Hole Diameter
0.375 inches
Overall Length
Between 2.466 inches and 2.486 inches
Thread Size
3/8-24
Body Outside Diameter
0.624 inches
Body Groove Width
0.125 inches
Spherical Radius
Any acceptable
Screw Thread Series Designator
Sae
Screw Thread Length
0.750 inches
Flats Length
0.219 inches
Size Designation
Standard
Material And Location
Steel, sae 1035 or sae 1335 body
Material And Location
Iron cam end
Adjustability
Adjustable
Operation Method
Mechanical
Width Across Flats
0.500 inches
Metallic Hardness Rating And Location
50.0 rockwell c face
Adjusting Device
Included
Cam End Diameter
Between 1.365 inches and 1.375 inches
Crown Height
Between 0.003 inches and 0.005 inches
Cam End Height
Between 0.183 inches and 0.185 inches
Body Groove Diameter
0.594 inches
Distance From Body Groove Center To Cam End
0.281 inches
Style Designator
Internal thread and wrenching flats push rod end
NSN
2805-00-358-2992
Part Number
18728A
Description
Tappet,engine Poppet Valve
CAGE
1ML14

A cylindrically shaped metal item designed to transmit intermittent motion from the cam lobe on a shaft or cam ring, to the engine poppet valve. It may be mechanically or hydraulically operating, and may include adjusting devices.

Part 18728A NSN 2805-00-358-2992

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22199
FIIG:
T267-F
Concept No.:
App. Key:
FA
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8481909090
  • SITC: 74790
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Parts of taps, cocks, valves and similar appliances, nesoi

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